Question: Which American citizen has spent the least amount of time in space?
Paraphrase: What American has spent less time in space?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q5 . ?ent wdt:P2873 ?obj . ?ent wdt:P27 wd:Q30} ORDER BY ASC(?obj)LIMIT 5 
Answer: Robert R. Gilruth, Joseph Kittinger, Roger Bruce Chaffee, Robert Henry Lawrence, Burt Rutan